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Active sludge aerobic respiration measuring device capable of being self-examined and corrected and application method thereof

A technology of activated sludge and measuring device, which is used in soil material testing, material inspection products, etc., can solve the problems of large measurement error and low test accuracy.

Inactive Publication Date: 2014-08-13
RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0032] In the actual operation of the above respiration measurement method and device, there are defects such as low test accuracy and large measurement error.

Method used

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  • Active sludge aerobic respiration measuring device capable of being self-examined and corrected and application method thereof
  • Active sludge aerobic respiration measuring device capable of being self-examined and corrected and application method thereof
  • Active sludge aerobic respiration measuring device capable of being self-examined and corrected and application method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0073] When using sodium acetate with a concentration of 200mgCOD / L as the organic substrate to test the oxygen consumption rate of the activated sludge aerobic process, proceed as follows:

[0074] (1) Add 6L of activated sludge into the aeration chamber, turn on the peristaltic pump, adjust the flow rate to 750ml / min, and make the activated sludge circulate through the pipeline flow control system in the aeration chamber, measurement chamber and breathing chamber.

[0075] (2) Set the control temperature to 20±0.5°C, control the pH value to 7.0±0.5, turn on the aeration pump, feed air into the aeration chamber, and turn on the magnetic stirrer at the bottom of the breathing chamber to make the mixture even.

[0076] (3) When the system temperature and pH value are stable, turn on the dissolved oxygen test sensor to measure the change of the dissolved oxygen concentration at the inlet and outlet of the breathing chamber. The measured values ​​of the sensors are recorded every...

Embodiment 2

[0091] When using urban sewage as the organic substrate to test the oxygen consumption rate of the activated sludge aerobic process, proceed as follows:

[0092] (1) Add 4L of activated sludge into the aeration chamber, turn on the peristaltic pump, adjust the flow rate to 750ml / min, and make the activated sludge circulate in the aeration chamber, measurement chamber and breathing chamber through the pipeline flow control system.

[0093] (2) Set the control temperature to 20±0.5°C, control the pH value to 7.0±0.5, turn on the aeration pump, feed air into the aeration chamber, and turn on the magnetic stirrer at the bottom of the breathing chamber to make the mixture even.

[0094] (3) When the system temperature and pH value are stable, turn on the dissolved oxygen test sensor to measure the change of the dissolved oxygen concentration at the inlet and outlet of the breathing chamber. The measured values ​​of the sensors are recorded every 5s.

[0095] (4) Heat the urban sew...

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Abstract

The invention discloses an active sludge aerobic respiration measuring device capable of being self-examined and corrected and an application method thereof, which belongs to the technical field of sewage treatment. The measuring device comprises an aeration chamber, a respiration chamber, a measuring chamber, a constant-temperature system, a pH control system and a pipeline flow-direction control system. An outlet of the aeration chamber bypasses a peristaltic pump and is sequentially connected with the measuring chamber, an inlet of the respiration chamber, an outlet of the respiration chamber, the other measuring chamber and an inlet of the aeration chamber through the pipeline flow-direction control system to form a circulating loop. The pipeline flow-direction control system consists of four normally open electromagnetic valves, four normally closed electromagnetic valves, a time relay and a connecting pipe and is a key part for the system to achieve the dynamic self examination and correction function of a soluble oxygen sensor. The dissolved oxygen measuring effect can be detected in real time in the running process of a reactor through the pipeline flow-direction control system, the dissolved oxygen measuring valve is verified, the problem that the dissolved oxygen sensor is drifted can be overcome, and the OUR (oxygen utility rate) calculation precision can be improved.

Description

technical field [0001] The invention relates to an activated sludge aerobic respiration measuring device and application method, which has the function of self-inspection and correction, and can accurately measure the oxygen utilization rate (OxygenUtilityRate, OUR for short) of activated sludge degrading organic matter in an aerobic state, and is suitable for water The experimental research on the kinetics of activated sludge in the treatment process, including the characterization of activated sludge characteristics, the analysis of the kinetic parameters of organic pollutant degradation, and the analysis of energy consumption during the aerobic degradation of organic pollutants, etc., belongs to the field of sewage treatment technology. Background technique [0002] The respiration measurement method is an effective tool and method for measuring the amount of dissolved oxygen consumed by microorganisms per unit time and unit volume (OUR) in activated sludge, and is often u...

Claims

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Application Information

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IPC IPC(8): G01N33/24
Inventor 刘俊新李衍博肖本益韩云平王旭
Owner RES CENT FOR ECO ENVIRONMENTAL SCI THE CHINESE ACAD OF SCI
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